CN116113816A

CN116113816A - Optical module test structure and device

Info

Publication number: CN116113816A
Application number: CN202080104051.2A
Authority: CN
Inventors: 邵修; 李雄; 唐兴龙; 徐梁; 徐鹏; 黄彧
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2020-09-29
Filing date: 2020-09-29
Publication date: 2023-05-12
Also published as: CN116113816A8; WO2022067579A1

Abstract

The utility model provides an optical module test structure and testing arrangement, optical module test structure is including fixing optical module cage (2) on the base plate, connect radiator (1) and the floating support mechanism on optical module cage (2), floating support mechanism includes first pushing mechanism and second pushing mechanism, first pushing mechanism one end is connected on the base plate, the other end is connected with the one end of second pushing mechanism, the other end and radiator (1) swing joint of second pushing mechanism, first pushing mechanism motion can drive second pushing mechanism and do reciprocating motion along first direction, second pushing mechanism can drive radiator (1) and do reciprocating motion along first direction. The clearance is kept between the radiator (1) and the optical module by adjusting the floating supporting mechanism, so that the optical module can be prevented from being scratched, the yield of the optical module after testing is improved, the optical module testing structure can be used for batch testing of the optical module, and the testing efficiency is improved.

Description

Optical module test structure and device

Technical Field

The application relates to the technical field of optical communication, in particular to an optical module testing structure and an optical module testing device.

Background

The optical module is an optoelectronic device for photoelectric and electro-optical conversion, the transmitting end of the optical module converts an electric signal into an optical signal, and the receiving end converts the optical signal into an electric signal. Before the optical module is sold, the optical module can be tested, so that good performance of the optical module is ensured.

The existing optical module testing structure mainly comprises a radiator, an optical module cage and a buckle, wherein the radiator is fixed on the optical module cage through the buckle, and the structure is shown in fig. 1. The optical module is inserted into the optical module cage, and the radiator is jacked up by the optical module in the process of inserting the optical module cage, so that the optical module is contacted with the radiator in the test process, and the radiator dissipates heat of the optical module in the test process. After the test is completed, the optical module is pulled out of the optical module cage.

The inventors have found that the prior art test structure has at least the following problems: the heat conduction pad cannot be added on the contact surface of the radiator and the optical module, so that the heat dissipation performance is affected; in the process of plugging and unplugging the optical module, the optical module and the radiator form relative sliding, and the contact surface of the optical module and the radiator is scratched, so that the quality of the optical module is affected.

Disclosure of Invention

The embodiment of the application provides an optical module test structure and device, which can solve the problem that an optical module is easily scratched by a radiator during testing, thereby improving the yield of the optical module after testing.

In order to achieve the above purpose, the present application adopts the following technical scheme:

in a first aspect, an optical module test structure is provided. The test structure comprises: the radiator and fix the optical module cage on the base plate, the radiator is connected on the optical module cage. The floating support mechanism comprises a first pushing mechanism and a second pushing mechanism, one end of the first pushing mechanism is connected to the base plate, the other end of the first pushing mechanism is connected with one end of the second pushing mechanism, the other end of the second pushing mechanism is movably connected with the radiator, the first pushing mechanism can drive the second pushing mechanism to reciprocate along the first direction, and the second pushing mechanism can drive the radiator to reciprocate along the first direction.

On the basis, the floating support mechanism comprises a first pushing mechanism and a second pushing mechanism, one end of the first pushing mechanism is connected to the base plate, the other end of the first pushing mechanism is movably connected with the radiator, the second pushing mechanism connected with the first pushing mechanism is driven to reciprocate along the first direction by pushing the first pushing mechanism to move, and the second pushing mechanism drives the radiator connected with the second pushing mechanism to reciprocate along the first direction.

The first direction in this embodiment can be the vertical direction when testing the optical module, through promoting first pushing mechanism and second pushing mechanism for the radiator rises in the vertical direction relative optical module cage, inserts the optical module into the optical module cage this moment, because the radiator is being driven by the second pushing mechanism and rising, therefore there is certain clearance between radiator and the optical module, can not contact with the radiator when the optical module inserts the optical module cage, has avoided the scratch optical module of radiator. When the optical module is inserted into a preset position, the first pushing mechanism and the second pushing mechanism are pushed to enable the radiator to descend in the vertical direction relative to the optical module cage, so that the bottom of the radiator is in contact with the optical module, and heat dissipation of the optical module in the testing process is achieved. When the optical module is required to be pulled out of the optical module cage, the first pushing mechanism and the second pushing mechanism are pushed again to enable the radiator to ascend in the vertical direction relative to the optical module cage, so that a certain gap is kept between the radiator and the radiator in the optical module pulling-out process, and the radiator is prevented from scratching the optical module in the pulling-out process.

Through setting up floating support mechanism, can make this test structure when testing different optical modules, when optical module inserts and pulls out the optical module cage, only need adjust floating support mechanism make between radiator and the every optical module keep the clearance can, need not to assemble corresponding radiator according to every optical module, realized the test of a large number of optical module.

Optionally, the heat sink reciprocates in the first direction by a movement stroke of 1mm-2mm. On this basis, since the heat sink is generally connected to the optical module cage through a fixed structure, the movement stroke of the heat sink for reciprocating movement is limited. The radiator is pushed along the first direction by the second pushing mechanism mainly to keep a gap with the optical module in the inserting and extracting processes of the optical module, so that the reciprocating motion travel of the radiator is set to be 1-2 mm, the connection between the radiator and the optical module cage is not affected, the gap between the radiator and the optical module in the inserting and extracting processes is kept, and the scratch of the radiator to the optical module is avoided.

In one possible design, the first pushing mechanism includes guide rods disposed on two sides of the optical module cage, and the guide rods are slidably connected to the substrate; the second pushing mechanism comprises a cam bearing follower and a slope-shaped boss arranged at the bottom of the radiator, the cam bearing follower is fixed on the guide rod, the slope-shaped boss is arranged corresponding to the cam bearing follower, and the cam bearing follower is contacted with the slope-shaped boss.

On the basis, through sliding connection of the guide rod on the base plate, the first pushing mechanism is pushed to move along the plane where the base plate is located, through the arrangement of the cam bearing follower and the slope-shaped boss, the cam bearing follower is contacted with the slope-shaped boss, when the cam bearing follower slides back and forth on the slope-shaped boss, if the cam bearing follower is fixed, the slope-shaped boss can reciprocate along a certain direction, and the movement of the cam bearing follower can be decomposed by limiting the slope-shaped boss, so that the cam bearing follower reciprocates along the first direction. The cam bearing follower is fixed on the guide rod, the slope-shaped boss is fixed on the radiator, and the guide rod is pushed to move back and forth, so that the radiator can be driven to reciprocate in the first direction through the cam bearing follower and the slope-shaped boss.

Optionally, the slope-shaped boss is a unilateral slope-shaped boss, a limit boss for limiting the sliding distance of the guide rod is arranged on the guide rod, and the sliding distance is smaller than or equal to the horizontal length of the slope-shaped part of the single slope-shaped boss.

On the basis, the single slope-shaped boss is equivalent to a one-way lock, namely the cam bearing follower cannot slide to the lowest point of the single slope-shaped boss after sliding past the highest point of the single slope-shaped boss, so that the second pushing mechanism cannot reciprocate. Therefore, by arranging the limiting boss, the sliding distance of the limiting boss limiting guide rod is smaller than or equal to the total horizontal length of the single slope-shaped boss, so that the cam bearing follower on the guide rod is always positioned on the slope surface of the single slope-shaped boss, and the single slope-shaped boss is driven to reciprocate by the reciprocating sliding of the guide rod, so that the reciprocating motion of the radiator is realized.

Optionally, the slope-shaped boss is a bilateral slope-shaped boss, and the guide rod is provided with a limit boss for limiting the sliding distance of the guide rod. On this basis, through setting up slope boss into two slope bosses, the slope boss of two can not restrict cam bearing follower and slide on the slope boss of two sides, consequently need not to restrict the concrete sliding distance of guide arm, but because the size restriction of test structure, the guide arm can not infinitely slide, consequently is provided with spacing boss in order to restrict the sliding distance of guide arm, and the sliding distance of limit boss restriction guide arm can set up according to test structure's concrete size in this embodiment, and this place does not limit.

Optionally, the guide bar is an integrally formed "U" shaped guide bar, the guide bar being located outside the optical module cage. On the basis, the guide rods are arranged into the U-shaped guide rods which are integrally formed, so that unified control over the movement of the guide rods on two sides of the radiator is facilitated, the guide rods on two sides can move simultaneously, the movement distance is the same, and therefore the whole reciprocating movement of the radiator is realized, and the gap between the bottom of the radiator and the optical module is consistent.

Optionally, the length of one side of the guide bar is longer than the length of the other side, and the end of the longer side of the guide bar is provided with a handle. The length of one side of the guide rod is longer than that of the other side, the longer side is convenient for pushing and pulling the guide rod, and the handle is arranged at the end part of the longer side, so that the movement of the guide rod can be controlled more conveniently.

In another possible design, the second pushing mechanism includes first supporting rods arranged at two sides of the optical module cage, one end of each first supporting rod is hinged on the base plate, and the other end of each first supporting rod is connected to the bottom of the radiator in a sliding manner; the first pushing mechanism comprises a first push rod which is arranged corresponding to the first support rod, and the first push rod is hinged to the middle of the first support rod.

On this basis, through setting up first push rod as first pushing mechanism, set up first branch as second pushing mechanism, through pushing and pulling first push rod, drive first branch and rotate, through the rotation of first branch, realize driving the radiator and do reciprocating motion along first direction, overall structure is simple, easy operation.

Optionally, a sliding groove is formed in the bottom of the radiator corresponding to the first supporting rod, and the other end of the first supporting rod on the same side is located in the sliding groove. On this basis, through setting up the spout in the radiator bottom, arrange the one end of first branch in the spout, be favorable to realizing sliding connection's stability between first branch and the radiator.

In another possible design scheme, the first pushing mechanism comprises second supporting rods arranged on two sides of the optical module cage and second pushing rods arranged corresponding to the second supporting rods, one ends of the second supporting rods are fixedly connected to the base plate, and the other ends of the second supporting rods are hinged to the middle parts of the second pushing rods; the second pushing mechanism comprises a second push rod and a third support rod, one end of the third support rod is fixedly connected with one end of the second push rod, which is close to the radiator, and the other end of the third support rod is in contact with the bottom of the radiator.

On this basis, through setting up second branch, third branch and second push rod, the middle part of second push rod articulates on the top of second branch for second push rod forms a lever, and first pushing mechanism is constituteed with second branch to second push rod, and second pushing mechanism is constituteed with third branch. The third support rod is arranged at one end of the second support rod, which is close to the radiator, and is in contact with the bottom of the radiator, and the third support rod is driven to reciprocate by rotating the other end of the second push rod, so that the radiator is driven to reciprocate along the first direction, and the gap between the radiator and the optical module is adjusted.

In a further possible embodiment, the heat sink is provided with a heat conducting pad on the bottom of the light module cage. On this basis, through set up the heat conduction pad on the bottom that the radiator is located the optical module cage, after the optical module inserts the optical module cage, optical module and radiator contact, just realized having increased the heat conduction pad between the contact surface of optical module and radiator, the heat dissipation ability of heat radiator is favorable to increasing to the heat conduction pad, promotes heat dispersion. The bottom in this embodiment refers to the face of the heat sink that is in contact with the light module. Through setting up first pushing mechanism and second pushing mechanism, when optical module inserts and pulls out optical module cage for keep certain clearance between radiator and the optical module, also can prevent that the optical module from scraping the heat conduction medium on the heat conduction pad at the in-process of inserting and pulling out, be favorable to realizing the heat conduction ability of heat conduction pad, promote heat dispersion.

In a second aspect, there is provided an optical module testing device comprising a printed circuit board as a substrate and an optical module testing structure as claimed in any one of claims 1 to 11; the optical module test structure is connected to the printed circuit board. The optical module testing device has the same technical effects as the optical module testing structure provided in the foregoing embodiment, and will not be described herein.

Drawings

Fig. 1 is a schematic diagram of an optical module test structure provided in the prior art;

fig. 2 is an application scenario diagram of an optical module test structure provided in an embodiment of the present application;

fig. 3 is a schematic structural diagram of a radiator in an optical module test structure according to an embodiment of the present application;

fig. 4 is a second schematic structural diagram of a heat radiator in an optical module testing structure according to an embodiment of the present application;

fig. 5 is one of schematic diagrams of an optical module test structure provided in an embodiment of the present application;

fig. 6 is a second schematic diagram of an optical module testing structure according to an embodiment of the present application;

fig. 7 is a third schematic diagram of an optical module test structure according to an embodiment of the present application;

fig. 8 is a schematic diagram of an optical module test structure according to an embodiment of the present application;

Fig. 9 is a fifth schematic diagram of an optical module test structure according to an embodiment of the present application;

fig. 10 is a schematic diagram of an optical module test structure according to an embodiment of the present application;

fig. 11 is one of schematic structural diagrams of a first pushing mechanism in an optical module testing structure according to an embodiment of the present application;

fig. 12 is a second schematic structural diagram of a first pushing mechanism in an optical module testing structure according to an embodiment of the present application;

fig. 13 is an exploded view of a first pushing mechanism in an optical module testing structure according to an embodiment of the present application;

fig. 14 is a schematic structural diagram of a thermal pad in an optical module test structure according to an embodiment of the present application.

In the figure: 1-a heat sink; 2-optical module cage; 21-top opening; 22-side openings; 3-a guide rod; 4-cam bearing follower; 51-single slope boss; 52-double slope boss; 6-sliding rails; 7-a slide block; 8-limiting bosses; 9-a handle; 10-positioning a boss; 11-a bottom plate; 12-side plates; 13-a first strut; 14-a first push rod; 15-a second strut; 16-a second pushrod; 17-a third strut; 18-a thermal pad.

Detailed Description

The technical solutions in the present application will be described below with reference to the accompanying drawings.

In the embodiments of the present application, words such as "exemplary" or "such as" are used to mean serving as examples, illustrations, or descriptions. Any embodiment or design described herein as "exemplary" or "for example" should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete fashion.

In the embodiments of the present application, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature.

In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more. The term "at least one" means one or more, and the term "plurality" means two or more.

It is to be understood that the terminology used in the description of the various examples described herein is for the purpose of describing particular examples only and is not intended to be limiting. As used in the description of the various described examples and in the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It will also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items. The term "and/or" is an association relationship describing an associated object, and means that there may be three relationships, for example, a and/or B, and may mean: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" in the present application generally indicates that the associated object is an or relationship.

It should be appreciated that determining B from a does not mean determining B from a alone, but may also determine B from a and/or other information.

It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

It should be appreciated that reference throughout this specification to "one embodiment," "an embodiment," "one possible implementation" means that a particular feature, structure, or characteristic described in connection with the embodiment or implementation is included in at least one embodiment of the present application. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment," "one possible implementation" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

The first direction in this embodiment refers to a direction perpendicular to the contact surface of the optical module and the heat sink 1; the second direction includes the same direction as the direction in which the optical module is inserted into the optical module cage 2, and a direction perpendicular to the contact surface of the optical module with the heat sink 1.

Referring to fig. 2, fig. 2 is an application scenario diagram of an optical module test structure provided in an embodiment of the present application. As shown in fig. 2, the optical module test structure is disposed on a substrate, and one optical module test structure may be disposed on the substrate, or a plurality of optical module test structures may be disposed on the substrate.

The substrate comprises a bottom plate 11 and a side plate 12, four optical module test structures are arranged side by side, the optical module test structures are fixed on the bottom plate 11 and the side plate 12, an inlet and an outlet of an optical module cage 2 in the optical module test structures are close to the side plate 12, and openings corresponding to the inlet and the outlet of the optical module cage 2 are formed in the side plate 12 so as to facilitate the insertion of the optical module into the optical module cage 2. The first pushing mechanism in the optical module testing structure may pass through the side plate 12 in order to fix the first pushing mechanism and facilitate operation.

Referring to fig. 5, fig. 5 is a schematic diagram of an optical module test structure according to an embodiment of the present application. As shown in fig. 5, the test structure includes: the optical module comprises a radiator 1 and an optical module cage 2 fixed on a substrate, wherein the radiator 1 is connected to the optical module cage 2. The test structure further comprises a floating support mechanism, the floating support mechanism comprises a first pushing mechanism and a second pushing mechanism, one end of the first pushing mechanism is connected to the substrate, the other end of the first pushing mechanism is connected with one end of the second pushing mechanism, the other end of the second pushing mechanism is movably connected with the radiator 1, the first pushing mechanism moves to drive the second pushing mechanism to reciprocate along the first direction, and the second pushing mechanism drives the radiator 1 to reciprocate along the first direction.

In this test structure, as shown in fig. 3 and 4, the heat sink 1 may be used to dissipate heat from an optical module during testing, and the optical module cage 2 is used to fix the optical module. As shown in fig. 1, the light module cage 2 is provided with a top opening 21 and a side opening 22, the top opening 21 being used for placing the heat sink 1, and the side opening 22 being used for inserting the light module into the light module cage 2 or for removing the light module from the light module cage 2. As shown in fig. 4, the bottom of the heat sink 1 is provided with a positioning boss 10, and the size of the positioning boss 10 matches the size of the top opening 21 of the optical module cage 2. Before testing, the radiator 1 is placed on the optical module cage 2, so that the positioning boss 10 at the bottom of the radiator 1 is positioned in the optical module cage 2, and then the radiator 1 and the optical module cage 2 are fixed by a fixing structure.

The fixing structure described above is in the prior art, and if a buckle can be used, the embodiment is not limited to a specific form of the fixing structure. After the radiator 1 and the optical module cage 2 are fixed through the fixing structure, certain displacement allowance exists between the radiator and the optical module cage 2, for example, the displacement allowance is 1-3mm, and the radiator and the optical module cage are not fixed in absolute theory.

As shown in fig. 5, before the optical module is inserted into the optical module cage 2, the first pushing mechanism is pushed in the second direction (horizontal leftward direction in fig. 5), and the first pushing mechanism moves the second pushing mechanism in the first direction (vertical upward direction in fig. 5). As shown in fig. 6, the second pushing mechanism jacks up the heat sink 1, at this time, the optical module is inserted into the optical module cage 2 (the insertion process of the optical module is not shown in the drawing), a certain gap is kept between the optical module and the positioning boss 10 at the bottom of the heat sink 1, and the positioning boss 10 will not scratch the optical module. After the optical module is placed at the preset position, the first pushing mechanism is pushed in the direction opposite to the second direction (the horizontal right direction in fig. 5), the first pushing mechanism drives the second pushing mechanism to move in the direction opposite to the first direction (the vertical downward direction in fig. 5), the second pushing mechanism does not jack up the radiator 1 any more, the radiator 1 returns to the initial position (the state shown in fig. 5), contact with the optical module is kept, and heat dissipation of the optical module in the test process by the radiator 1 is achieved. When the tested optical module needs to be taken out of the optical module cage 2, the first pushing mechanism is pushed along the second direction (horizontal left direction in fig. 5), the first pushing mechanism drives the second pushing mechanism to move along the first direction (vertical upward direction in fig. 5), the second pushing mechanism jacks up the radiator 1, and at the moment, the optical module is taken out of the optical module cage 2. After the optical module is taken out, another optical module can be inserted into the optical module cage 2, and the steps are repeated, so that the test of the next optical module is realized.

The initial position in this embodiment means: the positioning boss 10 of the radiator 1 is placed in the optical module cage 2, and the optical module is inserted into the optical module cage 2 at this time, so that the position of the radiator 1 relative to the optical module cage 2 can be maintained when the optical module is in contact with the positioning boss 10 of the radiator 1. The movable connection in the embodiment comprises a sliding connection, a hinging connection and other connection modes, and aims to realize relative movement or relative rotation between the two connected connection modes.

The working principle of the test mechanism is as follows: the floating mechanism comprises a first pushing mechanism and a second pushing mechanism, one end of the first pushing mechanism is connected to the base plate, the other end of the first pushing mechanism is movably connected with the radiator 1, the second pushing mechanism connected with the first pushing mechanism is driven to reciprocate along a first direction by pushing the first pushing mechanism to move, and the second pushing mechanism drives the radiator 1 connected with the second pushing mechanism to reciprocate along the first direction. The heat radiator 1 makes reciprocating motion along the first direction, so that when the optical module is inserted into or pulled out of the optical module cage 2, a certain gap is kept between the heat radiator 1 and the optical module, and the heat radiator 1 is prevented from scratching the optical module.

The light module cage 2 and the heat sink 1 may be arranged horizontally in this embodiment, so that the first direction may be a vertical direction. By pushing the first pushing mechanism and the second pushing mechanism, the states of the first pushing mechanism and the second pushing mechanism are shown as shown in fig. 6, in the process, the radiator 1 rises in the vertical direction relative to the optical module cage 2, at the moment, the optical module is inserted into the optical module cage 2, a certain gap exists between the radiator 1 and the optical module because the radiator 1 is driven to rise by the second pushing mechanism, the optical module cannot be contacted with the radiator 1 when being inserted into the optical module cage 2, and the radiator 1 is prevented from scratching the optical module. When the optical module is inserted into the preset position, the first pushing mechanism and the second pushing mechanism are pushed, so that the states of the first pushing mechanism and the second pushing mechanism are shown in fig. 5, in the process, the radiator 1 descends in the vertical direction relative to the optical module cage 2, the bottom of the radiator 1 is in contact with the optical module, and heat dissipation of the optical module in the test process is achieved. When the optical module is required to be pulled out of the optical module cage 2, the first pushing mechanism and the second pushing mechanism are pushed again to enable the radiator 1 to ascend relative to the optical module cage 2 in the vertical direction, so that the state of the second pushing mechanism is as shown in fig. 6, a certain gap is kept between the second pushing mechanism and the radiator 1 in the optical module pulling process, and the radiator 1 is prevented from scratching the optical module in the pulling process.

Through setting up floating support mechanism, can make this test structure when the different optical modules of test, when optical module inserts and pulls out optical module cage 2, only need adjust floating support mechanism make between radiator 1 and every optical module keep the clearance can, need not to assemble corresponding radiator 1 according to every optical module, realized the test of a large number of optical module.

In an embodiment of the present application, the movement stroke of the heat sink 1 reciprocating in the first direction is 1mm-2mm. Since the heat sink 1 is generally connected to the light module cage 2 by a fixed structure, the movement stroke of the heat sink 1 for reciprocating movement is limited. The radiator 1 is pushed along the first direction by the second pushing mechanism mainly to keep a gap with the optical module in the inserting and extracting process of the optical module, so that the reciprocating motion stroke of the radiator 1 is set to be 1mm to 2mm, the connection between the radiator 1 and the optical module cage 2 is not affected, the gap between the radiator 1 and the optical module in the inserting and extracting process is kept, and the scratch of the radiator 1 to the optical module is avoided.

By way of example, the movement stroke may be 2mm.

The floating heat dissipation mechanism in the embodiment of the application comprises a first pushing mechanism and a second pushing mechanism, and the first pushing mechanism and the second pushing mechanism are used for keeping a gap between the heat sink 1 and the optical module when the optical module is inserted or pulled out. The first pushing mechanism may be various, may be formed by combining two independent mechanisms, or may be different parts of a whole mechanism. Specific forms of the first pushing mechanism and the second pushing mechanism are exemplified below.

Example one

In this example, referring to fig. 5 and fig. 6, fig. 5 is a schematic structural diagram of a first pushing mechanism in an optical module testing structure provided in an embodiment of the present application, and fig. 6 is a second schematic structural diagram of the first pushing mechanism in the optical module testing structure provided in an embodiment of the present application. As shown in fig. 5 and 6, the first pushing mechanism includes guide rods 3 disposed at two sides of the optical module cage 2, and the guide rods 3 are slidably connected to the substrate; the second pushing mechanism comprises a cam bearing follower 4 and a slope-shaped boss arranged at the bottom of the radiator 1, the cam bearing follower 4 is fixed on the guide rod 3, the slope-shaped boss is arranged corresponding to the cam bearing follower 4, and the cam bearing follower 4 is contacted with the slope-shaped boss.

It should be noted that the guide rod 3 may be slidably connected to the base plate in various manners, such as a pulley connection manner, or a manner in which a chute is provided on the base plate to enable the guide rod 3 to slide on the base plate. In this embodiment, the guide rod 3 is slidably connected with the substrate through the slide rail 6 and the slide block 7, the slide rail 6 and the slide block 7 are connection structures in the prior art, refer to fig. 13, fig. 13 is an exploded view of the first pushing mechanism in the optical module testing structure provided in this embodiment of the present application, as shown in fig. 13, the slide block 7 is slidably connected in the slide rail 6, and in the example, the slide block 7 may be slidably connected in the slide rail 6 (not shown in the figure) through a roller, and then the slide rail 6 is fixed on the substrate, so that the guide rod 3 is fixed on the slide block 7, and the fixing manner may be fixed by adopting a bolt connection manner or a welding manner, and the embodiment is not limited to a specific fixing manner. Adopt such connection structure of slide rail 6 and slider 7, it is simple and convenient to connect, and slider 7 and slide rail 6 cooperation are stable, are convenient for realize that first pushing mechanism slides relative base plate.

The sloping boss in the embodiment of the application refers to a boss with a certain gradient, and the cam bearing follower 4 can slide on the boss with the gradient; the cam bearing follower 4 may be a standard in the art. Since the cam bearing follower 4 includes a bolt as a shaft, in order to facilitate connection between the cam bearing follower 4 and the guide rod 3, a screw hole corresponding to the bolt on the cam bearing follower 4 is provided on the guide rod 3, and the screw hole on the guide rod 3 is provided on a side of the guide rod 3 as shown in fig. 13. The cam bearing follower 4 and the guide rod 3 can be directly connected with the screw hole on the guide rod 3 through the bolt on the cam bearing follower 4, which is very convenient, and can be connected in other connection modes, such as welding. The slope-shaped boss is arranged at the bottom of the radiator 1, and the slope-shaped boss can be fixed at the bottom of the radiator 1, such as by welding or bolting, and can also be integrally formed with the radiator 1.

On the basis, the guide rod 3 is connected to the base plate in a sliding way through a connecting structure of the sliding rail 6 and the sliding block 7, and the first pushing mechanism is pushed to move along the plane of the base plate. By providing the cam bearing follower 4 and the ramp-shaped boss, the cam bearing follower 4 is in contact with the ramp-shaped boss, and since the cam bearing follower 4 is fixed to the guide rod 3, the cam bearing follower 4 can move along the plane of the base plate along with the guide rod 3, but is restricted from moving in other directions. When the cam bearing follower 4 slides back and forth on the ramp, the ramp reciprocates in a direction during the back and forth sliding of the cam bearing follower 4 on the ramp, since the cam bearing follower 4 is restrained from movement in other directions. The movement of the ramp-shaped bosses may then be resolved by limiting the movement to reciprocate in a first direction. Or by setting the position of the sloping boss and the angle of the sloping, the sloping boss reciprocates along the first direction, thereby driving the radiator 1 to reciprocate along the first direction. The cam bearing follower 4 is fixed on the guide rod 3, the slope-shaped boss is fixed on the radiator 1, and the guide rod 3 is pushed to move back and forth, so that the radiator 1 can be driven to reciprocate in the first direction through the cam bearing follower 4 and the slope-shaped boss.

In an embodiment of the present application, the sloping boss is a single-sided sloping boss 51, and the single-sided sloping boss 51 means that only one side of the boss has a sloping shape, or that only one side of the slope shape is suitable for the cam bearing follower 4 to slide thereon. For example, if the slope of the slope on the side having the slope is defined as 30 ° or less, and the cam bearing follower 4 is adapted to slide, the slope of the slope on the side of the one-sided slope boss 51 is 30 ° or less, and the slope of the slope on the other side is greater than 30 °.

Since the slope-shaped boss is a single-side slope-shaped boss 51, the single-side slope-shaped boss 51 is equivalent to a 'one-way lock', the cam bearing follower 4 can only slide from one side with a smaller gradient to the other side on the single-side slope-shaped boss 51, and cannot slide from the other side to the side with the smaller gradient. Thus, in order to enable the single-sided sloping boss 51 to reciprocate, the cam bearing follower 4 is to be on the side of the smaller slope. To achieve this, a limit boss 8 for limiting the sliding distance of the guide rod 3 is provided on the guide rod 3, and the sliding distance of the guide rod 3 is less than or equal to the horizontal length of the sloping portion of the single slope-shaped boss 51, so that the cam bearing follower 4 on the guide rod 3 is always on the sloping surface of the single slope-shaped boss 51 to realize reciprocating movement of the single slope-shaped boss 51 by the back and forth sliding of the guide rod 3, thereby realizing reciprocating movement of the radiator 1.

For example, if the shape of the single-sided sloping boss 51 is a right triangle, the horizontal length of the sloping portion of the single-sided sloping boss 51 refers to the length of the longer right angle side of the right triangle. For another example, if the shape of the single-sided sloping boss 51 is a right trapezoid, the horizontal length of the sloping portion of the single-sided sloping boss 51 may refer to the projected length of the sloping waist of the trapezoid on the bottom side; the horizontal length of the ramp portion of the single-sided ramp boss 51 may also refer to the lower base of the trapezoid, and when the single-sided ramp boss 51 includes a horizontal portion, the "ramp portion" of the single-sided ramp boss 51 may be understood as a generalized ramp portion, i.e., the horizontal portion of the single-sided ramp boss 51 may be counted into the "ramp portion", in this example, the "ramp portion" includes the hypotenuse waist and the upper base of the right trapezoid.

In an embodiment of the present application, referring to fig. 7 and 8, fig. 7 is a third schematic diagram of an optical module test structure provided in an embodiment of the present application, and fig. 8 is a fourth schematic diagram of an optical module test structure provided in an embodiment of the present application. As shown in fig. 7 and 8, the sloping boss is a double-sided sloping boss 52, and the guide rod 3 is provided with a limit boss 8 for limiting the sliding distance of the guide rod 3. The double-sided sloping boss 52 means that both sides of the boss have a sloping shape, i.e. the cam bearing follower 4 can slide from one side of the double-sided sloping boss 52 to the other side, or from the other side of the double-sided sloping boss 52 to the one side. However, the first pushing mechanism cannot move infinitely due to the size limitation of the entire test structure, and therefore, a limit boss 8 for limiting the sliding distance of the guide bar 3 is provided on the guide bar 3. The limit of the sliding distance of the limit boss 8 to the guide rod 3 may be set according to the size of the double-slope boss 52 in practical situations, and the sliding distance of the limit guide rod 3 may be generally equal to or slightly greater than the total horizontal distance of the double-slope boss 52.

When the optical module is inserted into the optical module cage 2, the state of the first pushing mechanism and the second pushing mechanism can be made as shown in fig. 8 by pushing the first pushing mechanism and the second pushing mechanism. When the optical module is inserted into the preset position, the first pushing mechanism and the second pushing mechanism are pushed so that the states of the first pushing mechanism and the second pushing mechanism are as shown in fig. 7, and the first pushing mechanism can be pushed reversely so that the cam bearing follower 4 moves to the other side of the double-side slope-shaped boss 52 shown in fig. 7. When the optical module is required to be pulled out of the optical module cage 2, the first pushing mechanism and the second pushing mechanism are pushed again to enable the radiator 1 to ascend relative to the optical module cage 2 in the vertical direction, so that the state of the second pushing mechanism is as shown in fig. 8, a certain gap is kept between the second pushing mechanism and the radiator 1 in the optical module pulling process, and the radiator 1 is prevented from scratching the optical module in the pulling process.

The specific shape of the double-slope-shaped boss 52 does not affect the achievement of the object of the present invention, and can be set according to practical situations, and the specific shape of the double-slope-shaped boss 52 is not limited in this embodiment. For example, the double-sided sloping boss 52 may be an obtuse triangle or trapezoid with the slope of the sloping portion being less than or equal to 45 °. In this case, the limit of the sliding distance of the guide bar 3 by the limit boss 8 may be set according to the base of the triangle or the lower base of the trapezoid.

In an embodiment of the present application, referring to fig. 11 and fig. 12, fig. 11 is a schematic structural diagram of a first pushing mechanism in an optical module testing structure provided in an embodiment of the present application, and fig. 12 is a second schematic structural diagram of the first pushing mechanism in the optical module testing structure provided in an embodiment of the present application. As shown in fig. 11 and 12, the guide rod 3 is an integrally formed "U" guide rod 3, and the guide rod 3 is located outside the optical module cage 2. On the basis, the guide rods 3 are arranged into the U-shaped guide rods 3 which are integrally formed, so that unified control over the movement of the guide rods 3 on two sides of the radiator 1 is facilitated, namely, the guide rods 3 on one side are controlled to move, namely, the guide rods 3 on the other side can be driven to move together, the guide rods 3 on two sides can move simultaneously, the movement distance is the same, and therefore the whole reciprocating movement of the radiator 1 is achieved, and the gap between the bottom of the radiator 1 and the optical module is consistent.

In an embodiment of the present application, the length of one side of the guide bar 3 is longer than the length of the other side, and the end of the longer side of the guide bar 3 is provided with a handle 9. By setting the length of one side of the guide bar 3 longer than the length of the other side, the longer side facilitates pushing and pulling the guide bar 3. For example, if the test structure is fixed on a fixed plate or the test structure is disposed in a box, the guide rod 3 on the longer side can pass through the fixed plate or the box, so as to control the sliding of the U-shaped guide rod 3 outside the box or on the other side of the fixed plate. The handle 9 is arranged at the end part of the longer side, so that the movement of the guide rod 3 can be controlled more conveniently. The specific shape of the handle 9 in this embodiment may be set according to practical situations, and the specific shape of the handle 9 does not affect the achievement of the object of the present invention, so the specific shape of the handle 9 is not limited.

For example, referring to fig. 13, fig. 13 is an exploded view of a first pushing mechanism in an optical module testing structure according to an embodiment of the present application. The shape of the handle 9 can be as shown in fig. 12 and 11, and the handle 9 is provided with a connecting groove and a connecting hole which are convenient to connect with the guide rod 3, and the handle 9 and the guide rod 3 can be connected in a threaded connection mode.

Example two

In this example, referring to fig. 9, fig. 9 is a schematic diagram of an optical module testing structure provided in an embodiment of the present application. As shown in fig. 9, the second pushing mechanism comprises first supporting rods 13 arranged at two sides of the optical module cage 2, one end of each first supporting rod 13 is hinged on the base plate, and the other end of each first supporting rod is connected to the bottom of the radiator 1 in a sliding manner; the first pushing mechanism comprises a first push rod 14 arranged corresponding to the first supporting rod 13, and the first push rod 14 is hinged to the middle part of the first supporting rod 13.

The first supporting rod 13 in the second pushing mechanism is hinged on the base plate at one end, and the other end slides at the bottom of the radiator 1, so that the first supporting rod 13 moves in an arc when moving, and because the space positions of all points in the arc are different, when the first supporting rod 13 in the second pushing mechanism reciprocates along the arc track, the radiator 1 is pushed to reciprocate along the first direction. The first direction is determined according to actual conditions, and is perpendicular to the direction of the optical module entering or exiting the optical module cage 2, so that a certain gap can be kept between the radiator 1 and the optical module when the optical module enters or exits the optical module cage 2. The first push rod 14 in the first pushing mechanism is mainly used for driving the first support rod 13 to reciprocate, so that the first push rod 14 is connected to the first support rod 13, and pushing force or pulling force is applied to the other end of the first push rod 14 to drive the first support rod 13 to move. Because the first supporting rod 13 moves in an arc manner during movement, in order to realize the flexibility of the first pushing rod 14, one end of the first pushing rod 14 can be hinged to the first supporting rod 13, so that the movement radian of the other end of the first pushing rod 14 is smaller, and the whole arrangement is convenient.

On this basis, through setting up first push rod 14 as first pushing mechanism, set up first branch 13 as second pushing mechanism, through pushing and pulling first push rod 14, drive first branch 13 rotation, through the rotation of first branch 13, realize driving radiator 1 and do reciprocating motion along the first direction, overall structure is simple, easy operation.

In an embodiment of the present application, a chute is disposed at the bottom of the radiator 1 corresponding to the first strut 13, and the other end of the first strut 13 on the same side is located in the chute. The bottom of the radiator 1 is provided with the sliding groove to realize the matching with the first supporting rod 13, and the sliding path of the first supporting rod 13 on the radiator 1 can be limited by arranging the sliding groove, and meanwhile, the first supporting rod 13 and the radiator 1 can be prevented from falling off. Since the first supporting rods 13 are arranged on both sides of the radiator 1, sliding grooves are formed in the positions, corresponding to the first supporting rods 13, of the left side and the right side of the bottom of the radiator 1, and the other ends of the first supporting rods 13 are placed in the corresponding sliding grooves. In practical applications, a person skilled in the art may set a pulley at the other end of the first strut 13 according to circumstances to increase the sliding property between the first strut 13 and the radiator 1.

Example three

In this example, referring to fig. 10, fig. 10 is a schematic diagram of an optical module testing structure provided in an embodiment of the present application. As shown in fig. 10, the first pushing mechanism includes second supporting rods 15 disposed on two sides of the optical module cage 2 and second pushing rods 16 disposed corresponding to the second supporting rods 15, one end of each second supporting rod 15 is fixedly connected to the substrate, and the other end of each second supporting rod 15 is hinged to the middle of each second pushing rod 16; the second pushing mechanism comprises a second push rod 16 and a third support rod 17, one end of the third support rod 17 is fixedly connected with one end, close to the radiator 1, of the second push rod 16, and the other end of the third support rod 17 is in contact with the bottom of the radiator 1.

In this example, the second push rod 16 is part of both the first and second pushing mechanisms. Through setting up second branch 15 and second push rod 16, the middle part of second push rod 16 articulates on the top of second branch 15 for second push rod 16 forms a lever, and the top of second branch 15 is the fulcrum of lever, and first pushing mechanism is constituteed with second branch 15 to second push rod 16. By arranging the third supporting rod 17 at one end of the second pushing rod 16 close to the radiator 1, the second pushing rod 16 and the third supporting rod 17 form a second pushing mechanism. The third supporting rod 17 is arranged at one end of the second supporting rod 15 close to the radiator 1, the third supporting rod 17 is in contact with the bottom of the radiator 1, the third supporting rod 17 is driven to reciprocate by rotating the other end of the second push rod 16, and the third supporting rod 17 drives the radiator 1 to reciprocate along the first direction so as to adjust the gap between the radiator 1 and the optical module. When the first direction is a non-vertical direction, the component force of the gravity of the radiator 1 in the first direction may be small, and the radiator 1 cannot recover to the position contacting with the optical module by virtue of the gravity of the radiator 1, at this time, the third support rod 17 and the bottom of the radiator 1 may be connected on the basis of contacting, so as to drive the radiator 1 to return to the position contacting with the optical module.

In an embodiment of the present application, the heat sink 1 is provided with a heat conducting pad 18 on the bottom inside the light module cage 2. Referring to fig. 14, fig. 14 is a schematic structural diagram of a thermal pad 18 in an optical module testing structure according to an embodiment of the present application. On this basis, as shown in fig. 14, by arranging the heat conducting pad 18 on the bottom of the radiator 1 in the optical module cage 2, when the optical module is inserted into the optical module cage 2, the optical module contacts with the radiator 1, so that the heat conducting pad 18 is added between the contact surface of the optical module and the radiator 1, and the heat conducting pad 18 is beneficial to increasing the heat dissipation capacity of the radiator 1 and improving the heat dissipation performance. The bottom in this embodiment refers to the surface of the heat sink 1 that is in contact with the light module. Through setting up first pushing mechanism and second pushing mechanism, when optical module inserts and extracts optical module cage 2 for keep certain clearance between radiator 1 and the optical module, also can prevent that the optical module from scraping the heat conduction medium on the heat conduction pad 18 at the in-process of inserting and extracting, be favorable to realizing the heat conduction ability of heat conduction pad 18, promote heat dispersion.

In addition, since the thermal pad 18 has a certain thickness, the thickness of the thermal pad 18 cannot affect the insertion and extraction of the optical module into and from the optical module cage 2, and the thickness of the thermal pad 18 can be set according to the maximum stroke of the reciprocal movement of the heat sink 1. For example, if the maximum stroke of the heat sink 1 is 2mm, the thickness of the thermal pad 18 may be 1mm or 1.5mm, and the thermal pad 18 is disposed on the surface of the heat sink 1 in contact with the optical module, so when the thickness of the thermal pad 18 is 1mm, the heat sink 1 moves to the maximum stroke, and when the optical module is inserted into the optical module cage 2, a gap of 1mm is maintained between the optical module and the thermal pad 18; if the thickness of the thermal pad 18 is set to 1.5mm, a gap of at most 0.5mm can be maintained between the optical module and the thermal pad 18 without scratching the optical module and the thermal pad 18.

Based on the same inventive concept, an embodiment of the present application provides an optical module testing device, which includes a printed circuit board as a substrate and the optical module testing structure provided in any one of the above embodiments, where the optical module testing structure is connected to the printed circuit board. The printed circuit board is in the prior art, the specific model structure of the printed circuit board is not limited in this embodiment, and a suitable printed circuit board can be flexibly adopted according to actual conditions. The optical module testing device has the same technical effects as the optical module testing structure provided in the foregoing embodiment, and will not be described herein.

The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

In this specification, each embodiment is described in a progressive manner, and each embodiment is mainly described by differences from other embodiments, and identical and similar parts between the embodiments are all enough to be referred to each other.

While preferred embodiments of the present embodiments have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the embodiments of the present application.

The above describes in detail an optical module testing structure and apparatus provided in the present application, and specific examples are applied to illustrate principles and embodiments of the present application, where the descriptions of the above examples are only used to help understand the method and core ideas of the present application; meanwhile, as those skilled in the art will have modifications in the specific embodiments and application scope in accordance with the ideas of the present application, the present description should not be construed as limiting the present application in view of the above.

Claims

The utility model provides a light module test structure, its characterized in that includes the radiator and fixes the light module cage on the base plate, the radiator is connected on the light module cage, still include the floating support mechanism, the floating support mechanism includes first pushing mechanism and second pushing mechanism, first pushing mechanism one end is connected on the base plate, the other end with the one end of second pushing mechanism is connected, the other end of second pushing mechanism with radiator swing joint, first pushing mechanism motion can drive the second pushing mechanism is along first direction reciprocating motion, the second pushing mechanism can drive the radiator is along first direction reciprocating motion.
The test structure of claim 1, wherein the heat sink reciprocates in the first direction with a travel of 1mm-2mm.
The test structure of claim 1 or 2, wherein the first pushing mechanism comprises guide rods arranged on two sides of the optical module cage, and the guide rods are slidably connected to the substrate;

the second pushing mechanism comprises a cam bearing follower and a slope-shaped boss arranged at the bottom of the radiator, the cam bearing follower is fixed on the guide rod, the slope-shaped boss is arranged corresponding to the cam bearing follower, and the cam bearing follower is in contact with the slope-shaped boss.
A test structure according to claim 3, wherein the ramp-shaped boss is a single-sided ramp-shaped boss, and the guide bar is provided with a limit boss for limiting the sliding distance of the guide bar, the sliding distance being smaller than or equal to the horizontal length of the ramp-shaped portion of the single-sided ramp-shaped boss.
A test structure according to claim 3, wherein the sloping boss is a double-sided sloping boss, and the guide rod is provided with a limit boss for limiting the sliding distance of the guide rod.
The structure according to any one of claims 3 to 5, wherein the guide bar is an integrally formed "U" shaped guide bar, the guide bar being located outside the light module cage.
The test structure of claim 6, wherein the length of one side of the guide bar is longer than the length of the other side, and the end of the longer side of the guide bar is provided with a handle.
The test structure according to claim 1 or 2, wherein the second pushing mechanism comprises first struts arranged on two sides of the optical module cage, one end of each first strut is hinged on the substrate, and the other end of each first strut is connected to the bottom of the radiator in a sliding manner;

the first pushing mechanism comprises a first push rod which is arranged corresponding to the first supporting rod, and the first push rod is hinged to the middle of the first supporting rod.
The test structure of claim 8, wherein a bottom of the heat sink is provided with a chute corresponding to the first strut, and the other end of the first strut on the same side is located in the chute.
The test structure according to claim 1 or 2, wherein the first pushing mechanism comprises second supporting rods arranged on two sides of the optical module cage and second pushing rods arranged corresponding to the second supporting rods, one ends of the second supporting rods are fixedly connected to the substrate, and the other ends of the second supporting rods are hinged to the middle parts of the second pushing rods;

The second pushing mechanism comprises a second push rod and a third support rod, one end of the third support rod is fixedly connected with one end, close to the radiator, of the second push rod, and the other end of the third support rod is in contact with the bottom of the radiator.
The test structure of any one of claims 1 to 10, wherein the heat sink is provided with a thermally conductive pad on a bottom portion within the light module cage.
An optical module testing device comprising a printed circuit board as a substrate and an optical module testing structure as claimed in any one of claims 1-11; the optical module test structure is connected to the printed circuit board.